第五周项目3-时间类

/*
*Copyright(c) 2016,烟台大学计算机与控制工程学院
*All rights reserved.
*文件名称:my.cpp
*作    者:张瀚文
*完成日期:2016年4月6日
*版 本 号：v1.0
*
*问题描述:1.在原类的基础上，在类内增加以下成员函数（将是内联成员函数）
add_a_sec()//增加一秒
add_a_minute()//增加一分
add_a_hour()//增加一小时
在main()函数中，调用新增加的成员函数，以测试扩充后的功能.
2.在增加三个成员函数，要求在类内声明,类外定义。
add_sec(int )//增加n秒
add_min(int )//增加n分
add_hour(int )//增加n小时
*输入描述:
*程序输出:
*/
#include <iostream>
using namespace std;
class Time
{
public:
void set_time();
void add_a_sec()
{
sec++;
if(sec>59)
{

sec=0;
add_a_minute();
}
}
void add_a_minute()
{
minute++;
if(minute>59)
{

minute=0;
add_an_hour();
}
}
void add_an_hour()
{
hour++;
if(hour>23)

hour=0;

}
void show_time();

private:
bool is_time(int,int,int);
int hour;
int minute;
int sec;
};
void Time::set_time()
{
char c1,c2;
cout<<"please input time(hh:mm:ss)";
while(1)
{
cin>>hour>>c1>>minute>>c2>>sec;
if(c1!=':'||c2!=':')
cout<<"the type is worng"<<endl;
else if(!is_time(hour,minute,sec))
cout<<"time is ille,please input again"<<endl;
else
break;
}
}

void Time::show_time()
{
cout<<hour<<":"<<minute<<":"<<sec<<endl;
}
bool Time::is_time(int h,int m,int s)
{
if(h<0||h>24||m<0||m>60||s<0||s>60)
return false;
return true;
}
int main()
{
Time t1;
t1.set_time();
cout<<"the present time is:";
t1.show_time();
cout<<endl<<"add one second:";
t1.add_a_sec();
t1.show_time();
cout<<endl<<"add one minute:";
t1.add_a_minute();
t1.show_time();
cout<<endl<<"add an hour";
t1.add_an_hour();
t1.show_time();
return 0;
}

#include <iostream>
using namespace std;
class Time
{
public:
void set_time();
void add_sec(int n)
{

sec+=n;
if(sec>59)

sec%=60;

}

void add_minute(int n)
{
minute+=n;
if(minute>59)

minute%=60;

}

void add_hour(int n)
{
hour+=n;
if(hour>24)

hour%=24;

}

void show_time();

private:
bool is_time(int,int,int);
int hour;
int minute;
int sec;
};
void Time::set_time()
{
char c1,c2;
cout<<"please input time(hh:mm:ss)";
while(1)
{
cin>>hour>>c1>>minute>>c2>>sec;
if(c1!=':'||c2!=':')

cout<<"the type is worng"<<endl;

else if(!is_time(hour,minute,sec))

cout<<"time is ille,please input again"<<endl;

else
break;
}
}

void Time::show_time()
{
cout<<hour<<":"<<minute<<":"<<sec<<endl;
}
bool Time::is_time(int h,int m,int s)
{
if(h<0||h>24||m<0||m>60||s<0||s>60)
return false;
return true;
}

int main()
{  int a_sec,a_min,a_hour;
Time t1;
t1.set_time();
cout<<endl<<"the present time is:";
t1.show_time();
cout<<"please input the add time(second minute hour)";
cin>> a_sec>>a_min>>a_hour;
t1.add_sec(a_sec);
cout<<endl<<"Add "<<a_sec<<"second,the time is:";
t1.show_time();
t1.add_minute(a_min);
cout<<endl<<"Add "<<a_min<<"minute,the time is:";
t1.show_time();
t1.add_hour(a_hour);
cout<<endl<<"Add "<<a_hour<<"hour,the time is:";
t1.show_time();

return 0;
}